Part of a breaker lockout



FIG. 1 is a perspective view of a top, front, and left side of an ornamental design for a part of a breaker lockout;

FIG. 2 is a perspective view of a bottom, rear, and left side of the base of FIG. 1;

FIG. 3 is a front elevational view of the base of FIG. 1;

FIG. 4 is a rear elevational view of the base of FIG. 1;

FIG. 5 is a right side elevational view of the base of FIG. 1;

FIG. 6 is a left side elevational view of the base of FIG. 1;

FIG. 7 is a top plan elevational view of the base of FIG. 1; and,

FIG. 8 is a bottom plan elevational view of the base of FIG. 1. 

CLAIM The ornamental design for a part of a breaker lockout, as shown and described. 